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<div id="overview"><a href="../../../../../../apidocs/name/pehl/taoki/paging/parser/HeaderPageInfoParser.html">View Javadoc</a></div><pre>

<a name="1" href="#1">1</a>   <strong class="jxr_keyword">package</strong> name.pehl.taoki.paging.parser;
<a name="2" href="#2">2</a>   
<a name="3" href="#3">3</a>   <strong class="jxr_keyword">import</strong> java.util.regex.Matcher;
<a name="4" href="#4">4</a>   <strong class="jxr_keyword">import</strong> java.util.regex.Pattern;
<a name="5" href="#5">5</a>   
<a name="6" href="#6">6</a>   <strong class="jxr_keyword">import</strong> name.pehl.taoki.paging.PageInfo;
<a name="7" href="#7">7</a>   <strong class="jxr_keyword">import</strong> name.pehl.taoki.paging.SortDir;
<a name="8" href="#8">8</a>   <strong class="jxr_keyword">import</strong> name.pehl.taoki.paging.SortInfo;
<a name="9" href="#9">9</a>   
<a name="10" href="#10">10</a>  <em class="jxr_javadoccomment">/**</em>
<a name="11" href="#11">11</a>  <em class="jxr_javadoccomment"> * {@link PageInfoParser} expecting the paging info as string with the following</em>
<a name="12" href="#12">12</a>  <em class="jxr_javadoccomment"> * format:</em>
<a name="13" href="#13">13</a>  <em class="jxr_javadoccomment"> * </em>
<a name="14" href="#14">14</a>  <em class="jxr_javadoccomment"> * &lt;pre&gt;</em>
<a name="15" href="#15">15</a>  <em class="jxr_javadoccomment"> * items={offset}-{last-index}[;{sortField}[:{sortDir}]]</em>
<a name="16" href="#16">16</a>  <em class="jxr_javadoccomment"> * &lt;/pre&gt;</em>
<a name="17" href="#17">17</a>  <em class="jxr_javadoccomment"> * </em>
<a name="18" href="#18">18</a>  <em class="jxr_javadoccomment"> * This parser works hand in hand with the</em>
<a name="19" href="#19">19</a>  <em class="jxr_javadoccomment"> * {@link name.pehl.taoki.paging.PagingHeaderResource}.</em>
<a name="20" href="#20">20</a>  <em class="jxr_javadoccomment"> * </em>
<a name="21" href="#21">21</a>  <em class="jxr_javadoccomment"> * @see name.pehl.taoki.paging.PagingHeaderResource</em>
<a name="22" href="#22">22</a>  <em class="jxr_javadoccomment"> * @author $Author: harald.pehl $</em>
<a name="23" href="#23">23</a>  <em class="jxr_javadoccomment"> * @version $Date: 2010-09-10 10:57:39 +0200 (Fr, 10. Sep 2010) $ $Revision:</em>
<a name="24" href="#24">24</a>  <em class="jxr_javadoccomment"> *          85318 $</em>
<a name="25" href="#25">25</a>  <em class="jxr_javadoccomment"> */</em>
<a name="26" href="#26">26</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../name/pehl/taoki/paging/parser/HeaderPageInfoParser.html">HeaderPageInfoParser</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../name/pehl/taoki/paging/parser/AbstractPageInfoParser.html">AbstractPageInfoParser</a>
<a name="27" href="#27">27</a>  {
<a name="28" href="#28">28</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String REGEXP = <span class="jxr_string">"^items=([0-9]+)-([0-9]+)(;([&#92;&#92;w]+)(:(asc|desc|none))?)?"</span>;
<a name="29" href="#29">29</a>  
<a name="30" href="#30">30</a>  
<a name="31" href="#31">31</a>      <em class="jxr_javadoccomment">/**</em>
<a name="32" href="#32">32</a>  <em class="jxr_javadoccomment">     * @param input</em>
<a name="33" href="#33">33</a>  <em class="jxr_javadoccomment">     *            a string containing the page info data</em>
<a name="34" href="#34">34</a>  <em class="jxr_javadoccomment">     * @return</em>
<a name="35" href="#35">35</a>  <em class="jxr_javadoccomment">     * @throws PageInfoParseException</em>
<a name="36" href="#36">36</a>  <em class="jxr_javadoccomment">     * @see name.pehl.taoki.paging.parser.PageInfoParser#parse(java.lang.Object)</em>
<a name="37" href="#37">37</a>  <em class="jxr_javadoccomment">     */</em>
<a name="38" href="#38">38</a>      @Override
<a name="39" href="#39">39</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../name/pehl/taoki/paging/PageInfo.html">PageInfo</a> parse(Object input) <strong class="jxr_keyword">throws</strong> PageInfoParseException
<a name="40" href="#40">40</a>      {
<a name="41" href="#41">41</a>          <strong class="jxr_keyword">if</strong> (input == <strong class="jxr_keyword">null</strong>)
<a name="42" href="#42">42</a>          {
<a name="43" href="#43">43</a>              <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a name="44" href="#44">44</a>          }
<a name="45" href="#45">45</a>          verifyInput(input, String.<strong class="jxr_keyword">class</strong>);
<a name="46" href="#46">46</a>  
<a name="47" href="#47">47</a>          String header = (String) input;
<a name="48" href="#48">48</a>          Pattern p = Pattern.compile(REGEXP);
<a name="49" href="#49">49</a>          Matcher m = p.matcher(header);
<a name="50" href="#50">50</a>  
<a name="51" href="#51">51</a>          String offset = <strong class="jxr_keyword">null</strong>;
<a name="52" href="#52">52</a>          String lastIndex = <strong class="jxr_keyword">null</strong>;
<a name="53" href="#53">53</a>          String sortField = <strong class="jxr_keyword">null</strong>;
<a name="54" href="#54">54</a>          String sortDir = <strong class="jxr_keyword">null</strong>;
<a name="55" href="#55">55</a>          <strong class="jxr_keyword">if</strong> (m.matches() &amp;&amp; m.groupCount() &gt; 1)
<a name="56" href="#56">56</a>          {
<a name="57" href="#57">57</a>              offset = m.group(1);
<a name="58" href="#58">58</a>              lastIndex = m.group(2);
<a name="59" href="#59">59</a>              <strong class="jxr_keyword">if</strong> (m.groupCount() &gt; 3)
<a name="60" href="#60">60</a>              {
<a name="61" href="#61">61</a>                  sortField = m.group(4);
<a name="62" href="#62">62</a>                  <strong class="jxr_keyword">if</strong> (m.groupCount() &gt; 5)
<a name="63" href="#63">63</a>                  {
<a name="64" href="#64">64</a>                      sortDir = m.group(6);
<a name="65" href="#65">65</a>                  }
<a name="66" href="#66">66</a>              }
<a name="67" href="#67">67</a>  
<a name="68" href="#68">68</a>              <strong class="jxr_keyword">int</strong> offsetValue = convertInt(offset, <span class="jxr_string">"Paging info \&quot;%s\&quot; contains the invalid offset: \&quot;%s\&quot;"</span>, header,
<a name="69" href="#69">69</a>                      offset);
<a name="70" href="#70">70</a>              <strong class="jxr_keyword">int</strong> lastIndexValue = convertInt(lastIndex, <span class="jxr_string">"Paging info \&quot;%s\&quot; contains the invalid last index: \&quot;%s\&quot;"</span>,
<a name="71" href="#71">71</a>                      header, lastIndex);
<a name="72" href="#72">72</a>              <strong class="jxr_keyword">int</strong> pageSize = lastIndexValue - offsetValue + 1;
<a name="73" href="#73">73</a>              <a href="../../../../../name/pehl/taoki/paging/SortDir.html">SortDir</a> sortDirValue = convertSortDir(sortDir);
<a name="74" href="#74">74</a>  
<a name="75" href="#75">75</a>              <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../name/pehl/taoki/paging/PageInfo.html">PageInfo</a>(offsetValue, pageSize, <strong class="jxr_keyword">new</strong> <a href="../../../../../name/pehl/taoki/paging/SortInfo.html">SortInfo</a>(sortField, sortDirValue));
<a name="76" href="#76">76</a>          }
<a name="77" href="#77">77</a>          <strong class="jxr_keyword">else</strong>
<a name="78" href="#78">78</a>          {
<a name="79" href="#79">79</a>              String error = String.format(<span class="jxr_string">"Paging info has the wrong format. Expected: %s, given: \&quot;%s\&quot;"</span>, REGEXP,
<a name="80" href="#80">80</a>                      header);
<a name="81" href="#81">81</a>              <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../name/pehl/taoki/paging/parser/PageInfoParseException.html">PageInfoParseException</a>(error);
<a name="82" href="#82">82</a>          }
<a name="83" href="#83">83</a>      }
<a name="84" href="#84">84</a>  }
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